Suction nozzle



Dec. 24, 1935. s. H. cRANMER 2,025,442

SUCTION NOZZLE Filed Jan. 22, 1935 1N TOR,

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Patented Dec. .24, 1935 UNITED STATES PATENT oFFicE l 2.025.442 SUCTION NOZZLE George Horace Cranmer, Philadelphia, Pa., as-

- signor, by mesne assignments, to Electrolux I Corporation, Dover, Del., a corporation of y Delaware Application January 22, 1 935, Serial No. 2,873 12 Claims. (Cl. 15-157) My invention relates to vacuum cleaners and more particularly to an improved suction nozzle for use with vacuum cleaners.

Depending upon the nature of the surface be-v the nozzle must pass chiefly through the rug,

thereby dislodging and removing the dirt from 15 Within the rug. On the other hand, if the dirt lies chiey on the surface to be cleaned, it may be better removed by providing a rapid flow of air along the surface. This may advantageously be done by providing grooves in the sealing edges or lips of the nozzle through which the air will pass.

One of the objects of my invention is to provide a suction nozzle which may be readily altered so as to present either uninterrupted sealing edges to the surface or edges provided with grooves or channels therethrough."

Another object of my invention is to provide f a nozzle of this nature which is quickly and easily alterable.

Still another object of my invention is to provide a structure for readily removing from rugs or other surfaces cotton threads or like matter tenaciously adhering thereto.

Further objects and advantages will be apparent from the following description considered in connection with the accompanying drawing of which:

Fig. 1 is an elevational view of a suction nozzle embodying my invention;

I Fig. 2 is a bottom view of the nozzle shown in Fig. 1; 1

Fig. 3 is a bottom view on an enlarged scale of a portion of the nozzle as shown in Fig. 2; `Fig. 4 is a cross-sectional View taken on the line 4-4 of Fig. 3; A

Fig. 5 is a cross-sectional view taken on the line 5-5 of Fig. 4;

Fig. 6 is a cross-sectional view taken on the line 6-6 of Fig. 4; l y

Fig. '7 is a cross-sectional view similar to Fig. 5, but with certain parts in a reversed position;

Fig. 8 is a cross-sectional view similar to Fig. 6, but with the parts reversed; Fig. 9 is a cross-sectional view showing particularly locking means for maintaining the parts in the desired position; and

Fig. 10 is a perspective view of a member shown in Fig. 9.

Referring more particularly to Fig. 1, reference character I 0 designates a nozzle mouthpiece which may be made of cast metal. `A connection member II is secured to mouthpiece I0 and communicates with vthe interior thereof and is adapted to be connected to a conduit leading to a 10 Y source of suction. This conduit usually comprises a rigid tubular member which also serves as a handle for moving the nozzle over the floor, and

a Aflexible hose for connecting it to a vacuum cleaner unit. v 15 Mouthpiece I0 may be described as comprising walls forming an elongated hollow member open at the bottom, the lower edges of the walls bounding the elongated suction opening I2. At both ends andat one side the edges are formed as 20 sealing lips I3 which have lower faces adapted to contact the surface being cleaned. The other bounding edge I 4 ofthe opening is formed with a semi-cylindrical groove I5, shown particularly in Figs. 5 to 8. The lip of side I4 includes a cy- 25 lindrical rod I6 which is rotatably mounted -in groove I5 and retained in place by means of Screws I1 and I8 which are threaded into holes in the mouthpiece andwhich have round pivot portions extending into circular recesses I9 30 formed in either end of rod I6.

One side of rod I6 has a smooth semi-cylindrical surface 20, seen particularly in Figs. 6 and 8. 'I'he other side of the rod is formed with circular lugs 2| having 'a depth preferably less than 1/2 35` the diameter of the rod. These lugs may be formed by slotting the rod in a direction atl right angles to its length. Each lugis preferably made up of two parts Zla and 2lb separated by a Alongitudinally extending groove 22, or it may be 40 considered that there are two laterally disposed rows of laterally aligned lugs. Due to the fact that the lugs have a depth less than l/p the diameter of the rod, the lugs will be entirely enclosed within the semi-circular groove I5 when in the 45 position shown in Fig. 8. On the other hand, when the rod is turned through ,180 degrees to the position shown in Fig. 6 the lugs will extend beyond the groove. The rod .I6 is so positioned that its lower side is tangent to the plane of the 50 other side or sealing lip of the suction opening v or in horizontal alignment therewith.

One end of rod I 8 is formed with a diametrically extending slot 23 within which is pivotally mounted a locking member 24. Member 2,4 may be piv- 5= said lips including a rotatably mounted cylin-l drical rod, one side of said rod being smooth and the other side being formed with a plurality ot transverse grooves, said rod being formed with a slot extending diametrically therethrough, and a locking member pivotally mounted in said slot, said locking "member resiliently engaging the sides of said slot.

11. A nozzle including bmmding walls forming a suction passage, one ot said walls having a rst set ot downwardlyl projecting lugs convexly rounded on faces toward the nomle passage and relatively straight on laces opposite the nozzle passage and a second set of lugs in alignment with the mst-mentioned lugs with reference to the normal direction of movement of the nozzle,

the lugs of the second set being convexly rounded on faces opposite the nozzle passage and relatively straight on faces toward the nome passage, the relatively straight faces being close together, whereby on' forward or backward moveforward act as guards with respect to the relatively straight faces.

12. A surface engaging lip structure for a suc- ,ment of the nozzle the lugs having rounded faces tion cleaner nozzle having a generally semi-cylin- 

